diff --git a/handlers/views_handler_field_entity.inc b/handlers/views_handler_field_entity.inc
index d8aaba4..75c51d1 100644
--- a/handlers/views_handler_field_entity.inc
+++ b/handlers/views_handler_field_entity.inc
@@ -53,7 +53,7 @@ class views_handler_field_entity extends views_handler_field {
 
     if (!empty($this->relationship)) {
       foreach ($this->view->relationship as $relationship) {
-        if ($relationship->alias == $this->relationship) {
+        if (isset($relationship->alias) && $relationship->alias == $this->relationship) {
           $base_table = $relationship->definition['base'];
           $this->table_alias = $relationship->alias;
 
diff --git a/plugins/views_plugin_query_default.inc b/plugins/views_plugin_query_default.inc
index 030c5ea..ae74d9e 100644
--- a/plugins/views_plugin_query_default.inc
+++ b/plugins/views_plugin_query_default.inc
@@ -1599,7 +1599,7 @@ class views_plugin_query_default extends views_plugin_query {
 
     if (!empty($relationship)) {
       foreach ($this->view->relationship as $current) {
-        if ($current->alias == $relationship) {
+        if (isset($current->alias) && $current->alias == $relationship) {
           $base_table = $current->definition['base'];
           $base_table_alias = $relationship;
           break;